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21 条记录 (耗时 0.02 秒)

    Enhanced oil recovery compositions and methods thereof
    2.
    发明授权
    Enhanced oil recovery compositions and methods thereof 有权

    公开(公告)号：US10851629B2

    公开(公告)日：2020-12-01

    申请号：US16421909

    申请日：2019-05-24

    申请人： Chevron U.S.A. Inc.

    发明人： Varadarajan Dwarakanath ,  Robert G. Shong ,  Gregory A. Winslow ,  Taimur Malik ,  Marlon Solano

    IPC分类号： E21B43/16 ,  C09K8/58 ,  C09K8/584 ,  C09K8/588 ,  C08L5/00 ,  C08L81/08

    摘要： Additional oil recovery is obtained from a reservoir with a composition comprising at least a coupling solvent typically employed in waterborne coating compositions. Provided herein are embodiments of methods of recovering hydrocarbons using at least one coupling solvent, such as an oxygenated coupling solvent. The coupling solvent increases the mutual solubility with water at the injection temperature to facilitate the mixing and injection, particularly with an optional co-solvent. The coupling solvent helps mitigate formation plugging and improve performance when injected into a formation, as the solvent mixture moves from being miscible in the injection field water to being miscible in the reservoir oil, mobilizing the reservoir oil to increase oil recovery.

    Multicarboxylate compositions and method of making the same
    4.
    发明授权
    Multicarboxylate compositions and method of making the same 有权

    公开(公告)号：US09976072B2

    公开(公告)日：2018-05-22

    申请号：US14668147

    申请日：2015-03-25

    申请人： Chevron U.S.A. Inc.

    发明人： Robert George Shong ,  Varadarajan Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

    IPC分类号： C09K8/584 ,  C07C59/305 ,  E21B43/16 ,  C09K8/588

    CPC分类号： C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  E21B43/16

    摘要： The present disclosure generally relates to a multicarboxylate, such as an alkyl alkoxy dicarboxylate a method of making the multicarboxylate, and methods to use the multicarboxylate. A specific embodiment of the disclosure is a compound comprising the chemical formula: R1-R2-R3, wherein R1 comprises a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having 7-150 carbon atoms; an oxygen atom linking R1 and R2; R2 comprises an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 comprises a branched or unbranched hydrocarbon chain comprising 2-12 carbon atoms and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. The composition has a variety of uses but in some embodiments may be used in enhanced oil recovery processes.

    Multicarboxylate Compositions And Method Of Making The Same
    8.
    发明申请
    Multicarboxylate Compositions And Method Of Making The Same 有权
    多羧酸酯组合物及其制备方法

    公开(公告)号：US20150275068A1

    公开(公告)日：2015-10-01

    申请号：US14668147

    申请日：2015-03-25

    申请人： Chevron U.S.A. Inc.

    发明人： Robert George Shong ,  Varadarajan Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

    IPC分类号： C09K8/584 ,  E21B43/16 ,  C07C59/305

    CPC分类号： C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  E21B43/16

    摘要： The present disclosure generally relates to a multicarboxylate, such as an alkyl alkoxy dicarboxylate a method of making the multicarboxylate, and methods to use the multicarboxylate. A specific embodiment of the disclosure is a compound comprising the chemical formula: R1-R2-R3, wherein R1 comprises a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having 7-150 carbon atoms; an oxygen atom linking R1 and R2; R2 comprises an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 comprises a branched or unbranched hydrocarbon chain comprising 2-12 carbon atoms and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. The composition has a variety of uses but in some embodiments may be used in enhanced oil recovery processes.

    摘要翻译： 本公开内容通常涉及多羧酸盐，例如烷基烷氧基二羧酸盐，制备多羧酸盐的方法，以及使用多羧酸盐的方法。 本公开的具体实施方案是包含化学式：R 1 -R 2 -R 3的化合物，其中R 1包含具有7-150个碳原子的支链或非支链，饱和或不饱和的环状或非环状疏水性碳链; 连接R1和R2的氧原子; R2包含环氧乙烷，环氧丙烷，环氧丁烷或其组合的烷氧基化链; 并且R 3包含包含2-12个碳原子和2-5个-COOH或-COOM基团的支链或非支链烃链，其中M是一价，二价或三价阳离子。 该组合物具有各种用途，但在一些实施方案中可用于增强的油回收方法中。

    PH control in fluid treatment
    9.
    发明授权
    PH control in fluid treatment 有权

    公开(公告)号：US11591893B2

    公开(公告)日：2023-02-28

    申请号：US17287734

    申请日：2019-10-22

    申请人： CHEVRON U.S.A. INC.

    发明人： Sujeewa S. Palayangoda ,  Kerry Kennedy Spilker ,  Sumitra Subrahmanyan ,  Gayani W. Pinnawala ,  Sophany Thach ,  Gregory A. Winslow ,  Dennis Arun Alexis ,  Harold Charles Linnemeyer ,  Timothy P. Theriot ,  Les Leszek Jackowski ,  Francesca Cibotti

    IPC分类号： E21B43/38 ,  C09K8/588 ,  E21B21/06 ,  C09K8/03

    摘要： Described herein are methods of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. The method can include adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The viscosity reducer is buffered at a pH of 7 or less (e.g., at a pH of from 2 to 7, such as at a pH of from 3.5 to 7, or at a pH of from 5 to 7). The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.